Onésime et son âne 1913

Directed by Jean Durand

Ernest Bourbon discovers that a shower of gold coins fall from his donkey's hindquarters -- I've phrased that as politely as I can. Now rich, he moves to the city, dresses well and hires servants. Unlike the one about the goose that lays the golden eggs, he treats his benefactor well, even though the donkey doesn't seem to enjoy the process.